Draft: Log `resize_duration_s`, excluding network time
Resolves #308 (moved)
Adds a separate log value for the duration which doesn't include data transfer time (which may vary significantly depending on the user network connection and skew the stats).
Example log:
ImageResizer: Success
bytes_written=776 content_type=image/png correlation_id=UWTUf6er607
duration_s=0.306926303
original_filesize=97868
resize_duration_s=0.001949905 // significantly less than duration_s
target_width=16
Edited by Aleksei Lipniagov